New York State Route 121 is a north-south highway in Southwestern Putnma County. It runs from U.S. Rt. 6/202, south to the Westchester/Putnam County Line. NY St Rt 121 does not pass through any towns in Putnam County. NY St Rt 121 is not multi-plexed in Putnam County. NY St Rt 121 intersects the following highways in Putnam County. U.S. Rt. 6, near Brewster. U.S. Rt. 202, near Brewster. Interstate 84, near Brewster.
